Solar Energy UK has called on the UK government to set a target of 60 GW of solar capacity by 2030, three times the current level, to lower electricity costs and ensure the success of its clean power goals.
The trade association highlighted research from Durham University Energy Institute, which suggests that expanding solar capacity alongside greater energy storage and grid flexibility could cut emissions, reduce reliance on expensive natural gas imports, and enhance the efficiency of wind generation.
According to the study, reaching 60 GW—comprising one-third rooftop solar and two-thirds ground-mounted installations—could reduce electricity system costs by 12%. Solar Energy UK believes this strategy would mitigate risks associated with delays in implementing the government's Clean Power Plan and reduce dependence on unproven technologies like carbon capture and storage.
The National Energy System Operator's (NESO) projections, which suggest a solar capacity of 47.4 GW by 2030, rely on outdated assumptions, the group said. Solar Energy UK estimates that by the end of 2024, installed capacity will exceed 20 GW, far above NESO's 15.1 GW baseline for 2023.
Chris Hewitt, Solar Energy UK's chief executive, emphasized the speed and cost-effectiveness of solar deployment: “Solar and batteries can be built very quickly, offering the government a huge opportunity to accelerate its clean power delivery in the next five years. Setting a goal to treble solar capacity to 60 GW will provide the lowest-cost, home-grown energy and thousands of secure jobs.”
Hewitt also urged reforms to streamline the grid connection process, which has left many renewable energy projects stuck in long queues.
Solar Energy UK's analysis is based on industry data and feedback from over 400 member organizations. Current operational solar capacity includes 11.5 GW from solar farms and 8.5 GW from rooftop installations on residential, commercial, and industrial buildings. An additional 3 GW of solar farms are under construction, while 11 GW have secured planning consent.
The organization noted that London's initiatives, such as the Warm Homes Fund and the Local Power Plan, could further bolster rooftop solar adoption. It also projected an additional 1 GW of rooftop capacity to be installed by the end of this year.
By setting an ambitious 60 GW solar capacity target, Solar Energy UK argues the government can unlock significant economic and environmental benefits while advancing the country's renewable energy transition.
